ep5352q Enpirion, ep5352q Datasheet - Page 9

• Manufacturer Part Number: ep5352q
• Description: 500/600/800ma Synchronous Buck Regulators With Integrated Inductor
• Manufacturer: Enpirion

March 2007
Figure 5. External Divider.
The output voltage is selected by the following
formula:
R
gain. Then R
Dynamically Adjustable Output
The EP53x2Q are designed to allow for
dynamic switching between the predefined VID
voltage levels The inter-voltage slew rate is
optimized to prevent excess undershoot or
overshoot
transition. The slew rate is identical to the soft-
start slew rate of 3.3mV/uS.
Dynamic transitioning between internal VID
settings and the external divider is not allowed.
Input and Output Capacitors
The input capacitance requirement is as
follows:
Enpirion recommends that a low ESR MLCC
capacitor be used. The input capacitor must
use a X5R or X7R or equivalent dielectric
©Enpirion 2007 all rights reserved, E&OE
V
R
EP5352Q, EP5362Q = 2.2uF
EP5382Q = 4.7uF
V
OUT
a
IN
b
must be chosen as 200KΩ to maintain loop
=
2.2uF
4.7uF
=
V
. 0
OUT
1
603
2 .
−
x
V
10
. 0
as
b
(
603
1
5
V
V
V
is given as:
ENABLE
V
S0
S1
S2
+
in
Ra
Rb
the
Ω
)
GND
output
V
Sense
V
V
out
FB
voltage
Ra
Rb
10µF
levels
V
OUT
9
formulation.
formulations lose capacitance with frequency,
bias, and with temperature, and are not
suitable for switch-mode DC-DC converter
input and output filter applications.
The output capacitance requirement is a
minimum of 10uF.
designed to be stable with up to 60uF of total
output
modification of the control loop. Capacitance
above the 10uF minimum should be added if
the transient performance is not sufficient using
the 10uF. Enpirion recommends a low ESR
MLCC type capacitor be used. The output
capacitor must use a X5R or X7R or equivalent
dielectric formulation.
dielectric formulations lose capacitance with
frequency, bias, and temperature and are not
suitable for switch-mode DC-DC converter
input and output filter applications.
Cin
Murata
Panasonic
Taiyo Yuden
Cin
Murata
Panasonic
Taiyo Yuden
Cout
Manufacturer
Manufacturer Part #
Manufacturer
Taiyo Yuden
Panasonic
Murata
GRM21BR71A225KA01L
GRM31MR71A225KA01L
GRM21BR70J225KA01L
ECJ-2FB1A225K
ECJ-3YB1A225K
ECJ-2YB0J225K
LMK107BJ225KA-T
LMK212BJ225KG-T
GRM219R61A475KE19D
GRM319R61A475KA01D
GRM219R60J475KE01D
GRM31MR60J475KA01L
ECJ-2FB1A475K
ECJ-3YB1A475K
ECJ-2FB0J475K
ECJ-3YB0J475K
LMK212BJ475KG-T
LMK316BJ475KD-T
JMK212BJ475KD-T
capacitance
GRM219R60J106KE19D
GRM319R60J106KE01D
JMK212BJ106KD-T
JMK316BJ106KF-T
ECJ-3YB0J106K
ECJ-2FB0J106K
Y5V or equivalent dielectric
Part #
Part #
EP5382Q/EP5362Q/EP5352Q
The control loop is
Y5V or equivalent
without
www.enpirion.com
Value
2.2uF
Value
4.7uF
Value
10uF
WVDC
WVDC
WVDC
6.3V
6.3V
6.3V
6.3V
6.3V
6.3V
6.3V
6.3V
10V
10V
10V
10V
10V
10V
requiring
Case Size
Case Size
Case Size
0805
1206
0805
0805
1206
0805
0603
0805
0805
1206
0805
1206
0805
1206
0805
1206
0805
1206
0805
0805
1206
0805
1206
0805
1206